MISSING subcommand (PROPORTIONS command)

MISSING optionally specifies the handling of missing values.

SCOPE
The specified keyword should be either ANALYSIS or LISTWISE. ANALYSIS indicates inclusion of all cases with sufficient data on the variables used in each particular analysis, while LISTWISE indicates inclusion of all cases with sufficient data on all variables used across all analyses specified by the command. ANALYSIS is the default setting.
USERMISSING
The specified keyword should be either EXCLUDE or INCLUDE. EXCLUDE treats user missing values as missing. INCLUDE ignores user missing value designations and treats user missing values as valid values. EXCLUDE is the default setting.
Note: This keyword setting has no effect on system missing values.